It looks like based on their feed chart you would use Tiger Bloom & Big Bloom all the way through bloom. Avoid Beastie Blooms it made my weed a couple years ago taste like chemicals even with a 2 week flush of pure RO.
I think the bloom supplements are the same regardless of medium. I could be wrong. Personally I avoid Fox Farm like the plague. Their quality has face planted.
Ocean Forest is always infested with bugs and larvae basically water and grow bugs. Their "CocoLoko" sucks horribly and isn't even primarily coco and doesn't water at all like coco it will stay wet for days like ProMIX HP even in a small pot.
Almost every thread you see with plant issues will say they're using Fox Farm.. I've seen new growers quit growing and lose interest due to variables beyond their control, which in the multiple cases have been starting with FFOF..
If you're going for organics personally I don't think anything beats running Nectar For The Gods with Promix or Coco whatever your preference is. Avoid bugs, avoid ph issues, avoid bad blends, make your own blends and you'll still be organic if thats your goal.
I think the fox farm soil is just weak,after 3 weeks just treat it like coco just feed every 2-3 days instead of daily.Just make sure every feed has a good run off.
Youd be farther ahead just using peat its so much cheaper.